using System;

public class TrickyStrings

{

    public static void Main()

    {

        string delimiter = Console.ReadLine();

        int n = int.Parse(Console.ReadLine());

        string output = string.Empty;

        for (int i = 0; i < n; i++)

        {

            string currentWord = Console.ReadLine();

            if (i != n - 1)

            {

                output = output + currentWord + delimiter;

            }

            else

            {

                output += currentWord;

            }

        }

        Console.WriteLine(output);

    }

}

​

​